linux-next
patch link:
https://lore.kernel.org/r/20240422015403.72526-5-xuanzhuo%40linux.alibaba.com
patch subject: [PATCH vhost v1 4/7] virtio_net: big mode support premapped
config: sh-allmodconfig
(https://download.01.org/0day-ci/archive/20240422/202404221325.sx5chrgp-...@intel.com/config
In big mode, pre-mapping DMA is beneficial because if the pages are not
used, we can reuse them without needing to unmap and remap.
We require space to store the DMA address. I use the page.dma_addr to
store the DMA address from the pp structure inside the page.
Every page retrieved from get_a_pa
